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Finding the Fourth Proportional to 16,778.78, 25,187.64 and 9,002.78

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Solution

The fourth proportional to 16,778.78, 25,187.64 and 9,002.78 is: 13,514.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,778.78 : 25,187.64 = 9,002.78 : x
  2. Step 2: Convert to fraction form
    16,778.78/25,187.64 = 9,002.78/x
  3. Step 3: Cross multiply
    16,778.78x = 25,187.64 × 9,002.78
  4. Step 4: Simplify right side
    16,778.78x = 226,758,781.64
  5. Step 5: Solve for x
    x = 226,758,781.64/16,778.78
  6. Step 6: Final answer
    x = 13,514.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.